Through the courtesy of the Trustees of the Australian Museum, Sydney, Australia, I have been privileged again to examine four additional small specimens of fresh water sponges which have been added to their collections since the publication of "Studies" number 1.
A new record of occurrence for Australia.
Ephydatia crateriformis(Potts). Two of the four sponges studied have been identified as Ephydatia crateriformis, a species which previously has been reported from India, the Dutch East Indies, China, the Philippine Islands and the United States of America. The extension of its range to Australia is therefore not unexpected, and it gives us pleasure to record this discovery.